The lack of Gedrosia admixture in modern NE Europe isn't too surprising since we already observe higher EEF ancestry and lower CHG ancestry in R1a steppe populations as opposed to R1b ones which correlates to higher Caucasian admixture in east Europe today where Gedrosia is lacking. Also Gedrosia admixture actually has been found in R1a carrying cultures from the steppe, although at a lower rate than predominantly R1b carrying ones and it seems across the board that Gedrosia admixture fell drastically in Europe leading up to modern times. In populations with predominantly R1b the Gedrosia admixture was great enough for it to still be detected today at significant levels, but in majority R1a populations that had less Gedrosia it has decreased enough to become undetectable. In some areas Gedrosia decreased over ten percent so that is more than enough for it to completely disappear in R1a populations. Perhaps R1b carrying groups on the steppe were closer to the incursion of Gedrosian admixture across the Caucasus than R1a groups were during the initial admixture event or maybe R1b groups crossed the Caucasus and brought back the Gedrosia admixture since CHG has been modeled before as IranNeo with some EHG. Alternatively as suggested by Maciamo R1a in northeast Europe could have been spread by IEnised EHGs without any Gedrosia admixture. In any event this component has not been identified by any professional paper and remains speculation based on the use of samples from modern populations, it is anything but damming.
As for linguistics the Corded Ware culture was located in a forested region and could have been responsible for transmitting words dealing with trees. I am not an arborist, but I am aware both linden and elm trees grow in this location. Shared agricultural terms could have been transmitted through cultural exchange with the GAC by the CWC. There is already an established connection between CWC, the Sintashta culture, the Catacomb culture and the Bell Beaker culture so this would include a range of IE language groups from indo-aryan to italo-celtic. Alternatively the lexicon could have been brought earlier from the Caucasus where people were already intimate with farming, but I am not sure if such trees you mentioned are located there.
This resolves where Renfrew's 20 percent figure for steppe related ancestry originates.
exactly
Now you seem to start understand the dilema
but Myceneans did not came from North,
the most possible that came from S caucasus direct
and if we combine the Vucedol theory from 1928
then the max North myceneans might reach was Vucedol around 2000 BC
if we follow the old theory of1928 republished lately by Giannopoulos
Max North is south areas of Baden the area I many times mention as Vatin or Vucocar
how come so much J2 came from there
or why so little Yamnaa came from there?
I do not mention the ones we call NW Greeks or proto-Greeks
they may have even Yamnaa origin
they have nothing to Do with Yamnaa
neither Iranians have to do,
so how come Greco-Aryan has same vocabulary with N Europe forest culture, the Yamnaa culture, or corded ware etc?
THING THAT WE NEED TO REALIZE IS THIS
R1b of west Europe has Gedrosian Component
But Lacks Caucasus component
so it should be away or pass veryfast from Black sea
Maykop Yamnaa etc
Why R1b is so low at Caucasu component?
and so rich at Gedrosia? !!!! EVEN AT BASQUEZ/Gasgones
did't pass few centuries at Yamnaa or Maykop etc?what connection has Aryan vocabulary with cordedware forest area?
maybe Iranians came from Yamnaa too?
come on